<template>
  <el-dialog :title="showTitle" :visible="showDialog" @close="close">
    <el-form label-width="120px" ref="addDept" :model="formData" :rules="rules">
        <el-form-item label="部门名称" prop="name">
            <el-input placeholder="2-10个字符" style="width: 80%" size="mini" v-model="formData.name"></el-input>
        </el-form-item>
        <el-form-item label="部门编码" prop="code">
            <el-input placeholder="2-10个字符" style="width: 80%" size="mini" v-model="formData.code"></el-input>
        </el-form-item>
        <el-form-item label="部门负责人" prop="managerId">
            <el-select placeholder="请选择负责人" style="width: 80%" size="mini" v-model="formData.managerId">
              <el-option 
                v-for="item in managerList"
                :key="item.id"
                :label="item.username"
                :value="item.id"></el-option>
            </el-select>
        </el-form-item>
        <el-form-item  label="部门介绍" prop="introduce">
        <el-input  placeholder="1-100个字符" type="textarea" size="mini" :rows="4" style="width: 80%"  v-model="formData.introduce"/>
      </el-form-item>
      <el-form-item>
        <!-- 按钮 -->
        <el-row type="flex" justify="center">
          <el-col :span="12">
            <el-button size="mini" type="primary" @click="btnOK">确定</el-button>
            <el-button size="mini" @click="close">取消</el-button>
          </el-col>
        </el-row>
      </el-form-item>
    </el-form>
  </el-dialog>
</template>
<script>
import { getDepartment, getManagerList, addDepartment, getDepartmentDetail } from '@/api/department'
export default {
  name: 'AddDept',
  data() {
    return {
      formData: {
        code: '',
        introduce: '',
        managerId: '',
        name: '',
        pid: ''
      },
      rules: {
        code: [{ required: true, message: '部门编码不能为空', trigger: 'blur'},
          { min: 2, max: 10, message: '部门编码的长度为2-10个字符', trigger: 'blur' },
          { // 新增时判断是否已经有这个编码
            trigger: 'blur',
            validator: async(rule, value, callback) =>{
              const result = await getDepartment()
              if(result.some(item => item.code === value)){
                callback(new Error('部门中已经有该编码了'))
              } else {
                callback()
              }
            }
           },{  // 编辑时判断是否已经有这个编码
            trigger: 'blur',
            validator: async(rule, value, callback) => {
              let result = await getDepartment()
              if(this.formData.id) {
                result = result.filter(item => item.id !== this.formData.id)
              }
              if(result.some(item => item.code === value)) {
                callback(new Error('部门中已经有该编码了'))
              } else {
                callback()
              }
            }
           }],
        introduce: [{ required: true, message: '部门介绍不能为空', trigger: 'blur' },
          { min: 1, max: 100, message: '部门介绍的长度为1-100个字符', trigger:'blur' }],
        managerId: [{ required: true, message: '部门负责人不能为空', trigger: 'blur' }],
        name: [{ required: true, message: '部门名称不能为空', trigger: 'blur' },
          { min: 2, max: 10, message: '部门名称的长度为2-10个字符', trigger: 'blur' },
          {  // 新增时判断是否部门名称重复
            trigger: 'blur',
            validator: async(rule, value, callback) => {
              const result = await getDepartment()
              if(result.some(item => item.name === value)) {
                callback(new Error('部门中已经有该名称了'))
              } else {
                callback()
              }
            }
          },{  // 编辑时判断是否部门名称重复
               trigger: 'blur',
               validator: async(rule, value, callback) => {
                let result = await getDepartment()
                if(this.formData.id) {
                  result = result.filter(item => item.id !== this.formData.id)
                }
                if(result.some(item => item.name === value)) {
                  callback(new Error('部门中已经有该名称了'))
                } else {
                  callback()
                }
               }
          }]  
      },
      managerList: []
    }
  },
  props: {
    showDialog: {
      type: Boolean,
      default: false
    },
    // 存储当前点击的id
    currentNodeId: {
      type: Number,
      default: null
    }
  },
  created() {
    this.getManagerList()
  },
  computed: {
    showTitle() {
      return this.formData.id ? '编辑部门' : '新增部门'
    }
  },
  methods: {
    // 获取部门详情
    async getDepartmentDetail() {
      this.formData = await getDepartmentDetail(this.currentNodeId)
    },
    // 确认按钮
    btnOK() {
      this.$refs.addDept.validate(async isOK => {
        if(isOK) {
          let msg = '新增'
          if(this.formData.id) {
            msg = '更新'
            await updateDepartment(this.formData)
          } else {
            await addDepartment({...this.formData, pid: this.currentNodeId})
          }
          // addDepartment需要的参数需要formData里的内容，但formData里面pid没有值，pid在currentNodeId里，
          // 所以需要pid: this.currentNodeId将pid覆盖formData里的pid
          this.$emit('updateDepartment')
          this.$message.success(`${msg}部门成功`)
          this.close()
        }
      })
    },
    async getManagerList() {
      this.managerList = await getManagerList()
      // console.log(this.managerList)
    },
    close() {
      this.formData = {
        code: '',
        introduce: '',
        managerId: '',
        name: '',
        pid: ''
      }
      this.$refs.addDept.resetFields()
      this.$emit('update:showDialog', false)
    }
  }
}
</script>